Parting strip assembly for highways and the like



Dec. 26, 1950 J. H. JACOBSON 2,535,135

PARTING STRIP ASSEMBLY FOR HIGHWAYS AND THE LIKE Filed April 17, 1948Why INVENTOR:

JAMES H. JACOBSON these several points of improvement.

Patented Dec. 26, 1950 UNITED STATES PATENT OFFICE PARTING STRIPASSEMBLY FOR HIGHWAYS AND THELIKE 6 Claims.

of a highway is usually extended lengthwise of its "center.

It is important that a parting strip assembly for this purpose beproduced at small expense, and lend itself to installation with amaximum of dependability and minimum of effort. The parting stripassembly herein to be disclosed embodies Also the improvements herein tobe described are concerned in part with the provision of simple andefiective means whereby to grip a tie bar which is extended transverselythrough the parting strip 'so that the relative positions of these partswill Fig. 2 is a vertical section therethrough taken on line 2-2 of Fig.i;

Fig. 3 is a front elevation, enlarged, of one of the clip plates; and

'Fig. 4 is a fragmentary vertical section, taken on line 44 of Fig. 1.

As shown in Figs. 1 and 2, a subgrade S is prepared to support thereupona monolithic highway or the like through which, usually longitudinallythereof, is extended a plurality of end-to-end parting strips P which,with the transverse joints serve to define rectangular units into eachof which concrete or the like is poured to provide slabs which remainmutually separated. This invention is concerned with the parting stripsP and the parts assembled therewith which extend between and cooperatewith transverse joints such as those above noted.

Referring now to Figs. 2-4, the parting strip P here shown consistsessentially of a sheet of metal, composition or other suitable material.In its center region the strip body II] is offset to provide a shortvertical wall I l which is connected thereto by upper and lower obliquewalls l2 and 13 which diverge as they approach the strip body to jointherewith. In the completed concur-notion, adjacent slabs A and B ofconcrete or the like will present their confronting faces on oppositesides olthe parting strip so as to be substantially completely separatedthereby.

As indicated in Fig. 2, the material of the slab B will occupy the spacedefined by the oblique walls l2 and i3 and their connecting verticalwall ll, whereby to interlock this slab with the adjacent slab A so thatrelative vertical movement therehetwcen is prevented. In thisconstruction I use stake pins i l each of channeled cross sectional formwith parallel flanges'ili extending opposite sides. Slots is of likecontour are provided in the oblique walls i2 and it for reception of thestake pin l i which when passed therethrough will lie adjacent the bodyof the parting strip.

To maintain each stake pin in assembled relation with the strip, Iemploy a spring clip plate C a form which closely'corresponds with theoutset walls of the strip. It comprises a lower wall 58 and an upperwall l9, both diverged outwardly as best shown in Fig. 4.

an openingil of proper size and shape to receive the channeled stake pini. A similar tongue 22 and slot 23 are provided in the lower wall id ofthe plate C. The free end of the upper tongue rill may be bent towardthe pin it (See Fig-fl) and likewise the free end or" the lower tongue22 may be bent away from the pin for resilient engagement therewith. Theclip plate isadapted to enter through a slot 25 at the top of the outsetwall it so that the upper oblique wall E8 of the clip plate'may lieoppositely of the parting strip to the under side of its oblique wall52; the clip plate near its lower end is also entered through a slot '26in the parting strip body close to its juncture with the lower obliquewall i3. The free end portions 2? and 28 of the clip plate at its topand bottom, respectively, may be bent upwardly and downwardly (see Fig.l) so as to closely engage the parting strip upon its side which isopposite that whereon the stake pin is carried. The width of the tongues2t and 22 is such that each may enter between the two flanges 15 of thestake pin M, the down-turned free edge of each tongue being adapted forpressure engagement therewith.

It will be manifest that a channeled stake pin, when assembled with theparting strip P and retained therewith with a spring clip plate C of thekind described, will tend to remain immovably in place against the bodyof the strip. The stake pin and. strip are engaged with frictionalStruck out from the upper wall it is a tongue 2i] surrounded by pressureby a plurality of spaced means, viz. the tongue 20 and edge of theopening 2| at an upper point, and the tongue 22 and edge of the opening23 at a lower point. The connection, however, is such that the stake pinmay readily be moved endwise of itself relative to the parting strip inresponse to the impact delivered from a hammer or other percussioninstrument.

In the installation of such a strip, the stake pins are preassembledtherewith with the aid of the clip plates, and the parting strip is thenplaced upon the subgrade in position for installation. At this point thestake pins are driven downwardly so that their pointed lower ends 29will enter into the subgrade, and in this movement the stake pins willadvance lengthwise of themselves and transversely of the parting stripto reach their final anchoring positions. After the concrete is poured,a filler F of mastic or other material may be placed between the slabsabove the parting strip, if there be a gap at this point.

In the construction herein described the stake pins are movable relativeto the parting strip. Because of this fact, the stake pins may initiallyoccupy positions where their pointed lower ends are depressed below thebottom edge of the parting strip. with the parts thus related, thebottom edge of the parting strip may then be rested directly upon thesubgrade S following which each stake pin is driven downwardly to becomeanchored in the subgrade thereby to provide vertical support for theparting strip.

I claim:

1. In combination, a parting strip having its body offset to provideupper and lower oblique walls in connection with a vertical walltherebetween, there being formed two slots opposite each other, one eachin the upper and lower oblique walls close to the strip body and otherslots extending lengthwise of the strip, one through the offset verticalwall adjacent the upper oblique 'wall and the other through the stripbod adjacent the lower oblique wall, a spring clip plate contoured ingeneral conformity with the offset portion of the strip body and enteredthrough the two slots last named to lie in part adjacent the under faceof the upper oblique wall of the strip, in part upon the opposite sideof the strip adjacent the ofiset vertical wall, and in part adjacent theunder face of the lower oblique wall of the strip, the clip plate beingformed therethrough with two spaced slots each adjacent the strip body,a stake pin entered through the two first named slots of the obliquewalls and through the two slots of the clip plate to lie adjacent thestrip body while disposed transversely of its length, and means integralwith the clip engaging the stake pin with pressure at spaced points, oneadjacent each slot in the parting strip through which the stake pin ispassed.

2. A parting strip according to claim 1 in which the stake pin iscross-sectionally channeled with side flanges extending away from thestrip body, and in which the clip plate engages the stake pin at pointsbetween the flanges thereof.

3. A parting strip according to claim 1 in which the stake pin iscross-sectionally channeled with side flanges extending away from thestrip body, in which the width of the clip plate exceeds that of thestake pin, and in which the clip plate is slotted at upper and lowerends to accommodate the stake pin flanges and also to providetherebetween tongues adapted to enter between the pin flanges forengagement with the body of the stake pin.

4. A parting strip according to claim 1 in which the clip plate widthexceeds that of the stake pin, the clip plate being provided at oppositeends with narrow spring tongues opposite the stake pin and in engagementtherewith.

5. A parting strip according to claim 1 in which the diverging ends ofthe clip plate are turned to engage with the strip body upon the sidethereof which is opposite that whereupon the stake pin is carried 6. Incombination, a parting strip having its body offset to provideconverging upper and lower oblique walls in connection with a verticalwall therebetween, the ofiset portion of the parting strip being formedwith upper and lower vertically aligned slots adjacent its body and withan intermediate slot, in alignment with the other two slots, formedthrough the vertical wall of the parting strip between the oblique wallsthereof, there being also in the body of the parting strip adjacent thelower slot in its oifset portion a lowermost slot in alignment with theother three slots, a spring clip plate contoured in general conformitywith that of the ofiset portion of the strip body entered through theintermediate slot of the parting strip and through the lowermost slot inits body, the clip plate being provided at spaced points adjacent thestrip body with slots each having an associated tongue, and a stake pinentered through the upper and lower slots of the parting strip adjacentits body and through the two slots of the clip plate to receive pressureengagement from the tongues thereof, the clip plate at points beyond thetongues being engaged with the parting strip body upon the face thereofwhich is opposite the stake pin.

JAMES H. JACOBSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

